Intradiscal shim



FIG. 1 is a perspective view of a front side of an intradiscal shim showing our new design;

FIG. 2 is a perspective view of a rear side thereof; and,

FIG. 3 is a side view thereof.

The broken lines shown in the figures are included for the purpose of illustrating portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for a surgical instrument, substantially as shown and described. 